WebJan 24, 2024 · (b) Screenshots of the syndiotactic chiral beam in the anti-resonance and resonance peaks, at point A of frequency of 970 Hz, at point B of frequency of 1192 Hz, at point C of frequency of 3082 Hz ... WebAug 16, 2024 · [Show full abstract] will scatter the excited surface mode to another chiral surface mode with a greater Bloch wave vector, resulting in an acoustic pulling force, …
Wave Propagation in Auxetic Tetrachiral Honeycombs
The above physics can be extended to the 3D metamaterial with the unit cell shown in Fig. 3a. The unit cell consists of three chiral resonators mutually connected with tubes, as shown in Fig. 3b. The numerically calculated band structure of the metamaterial is shown in Fig. 3c. The lowest three bands derive … See more The longitudinal nature of airborne sound (\({{{{{\boldsymbol{\nabla }}}}}}\times {{{{{\bf{v}}}}}}=0\)) dictates that the velocity field v aligns with the direction of wave vector k in general. … See more The SOIs of transverse waves can also happen in real space. One intriguing phenomenon induced by such SOIs is the spin-dependent vortex generation in the scattering of subwavelength particles, which leads to the … See more The transverse sound near the \(\Gamma\) point in Fig. 3c can be described by an effective Hamiltonian \(H=-v{{{{{\bf{S}}}}}}\cdot {{{{{\bf{k}}}}}}\) with S being the spin-1 operator defined as \({({S}_{i})}_{{jk}}= … See more WebNov 1, 2024 · Elastic and acoustic wave band structure. J Sound Vib, 158 (1992), pp. 377-382. View PDF View article Google Scholar [10] ... Structural and acoustic behavior of chiral truss-core beams. J Vib Acoust, 128 (2006), pp. 616-626. CrossRef View in Scopus Google Scholar [35] E. Baravelli, M. Ruzzene. birthday party halls in hyderabad
Mapping acoustical activity in 3D chiral mechanical
WebApr 22, 2010 · This paper describes a numerical and experimental investigation on the flexural wave propagation properties of a novel class of negative Poisson’s ratio honeycombs with tetrachiral topology. Tetrachiral honeycombs are structures defined by cylinders connected by four tangent ligaments, leading to a negative Poisson’s ratio … WebApr 13, 2024 · This paper studies the in-plane mechanical behaviors of a chiral S-shaped metastructure subjected to tensile loading in both X-direction and Y-direction and wave … WebAug 18, 2024 · Here, we demonstrate that switching Poisson's ratio from positive to negative can reverse the topological non-reciprocity by mechanically stretching and compressing a chiral acoustic metamaterial. We find that the positive–negative switch of Poisson's ratio is associated with the topological phase transition of the acoustic lattice, which is ... dan rich furniture